create new user

Ubuntu

# Add User
sudo adduser username
sudo usermod -aG sudo username  # add to sudo group
sudo usermod -aG docker username  # add to docker group
sudo vim /etc/sudoers  # edit sudo group
sudo passwd username

# Test sudo privilege
sudo ls /root

# Del User
sudo userdel -r username

Centos （Kylin-v10-sp1）

# Add User
sudo adduser username
sudo usermod -aG wheel username  # add to sudo group
sudo passwd username

# Test sudo privilege
sudo ls /root

# Del User
sudo userdel -r username